To get Jennifer Lawrence's sun-brightened look without a trip to the salon, Canalé recommends lemon juice to help lighten strands naturally. "Squeeze lemon juice directly onto hair every half hour you are in the sun, or combine three tablespoons of lemon juice with one cup of water and leave the treatment in your hair all day. The lemon juice will remove oxidation from the hair and give your strands a natural, summer glow.”